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GB1256164A - Signal phasecompensation circuits - Google Patents

Signal phasecompensation circuits

Info

Publication number
GB1256164A
GB1256164A GB47503/69A GB4750369A GB1256164A GB 1256164 A GB1256164 A GB 1256164A GB 47503/69 A GB47503/69 A GB 47503/69A GB 4750369 A GB4750369 A GB 4750369A GB 1256164 A GB1256164 A GB 1256164A
Authority
GB
United Kingdom
Prior art keywords
pulse
generator
pulses
voltage
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB47503/69A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1256164A publication Critical patent/GB1256164A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
    • H03L7/0891—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D13/00—Circuits for comparing the phase or frequency of two mutually-independent oscillations
    • H03D13/003—Circuits for comparing the phase or frequency of two mutually-independent oscillations in which both oscillations are converted by logic means into pulses which are applied to filtering or integrating means
    • H03D13/004—Circuits for comparing the phase or frequency of two mutually-independent oscillations in which both oscillations are converted by logic means into pulses which are applied to filtering or integrating means the logic means delivering pulses at more than one terminal, e.g. up and down pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

1,256,164. Pulse locked oscillators. INTERNATIONAL BUSINESS MACHINES CORP. 26 Sept., 1969 [28 Oct., 1968], No. 47503/69. Heading H3A. A signal phase compensating circuit arranged to produce a timing signal train (Fig. 3C) of a frequency controlled from a binary data input signal train (Fig. 3a) in which voltage transitions in one sense indicate data bits of one kind comprises two pulse train generators 18, 22, each responsive to a voltage transition in the said sense in the data input to generate a pulse, one pulse being of fixed width, the other pulse (Fig. 3d) being terminated in response to the next occurring timing signal, the direct output pulses of each generator being separately combined with pulses from the other generator, which have been subjected to a fixed delay 30, 42, the two combinations being arranged to control, one combination to tend to increase and the other to tend to decrease, a voltage input (Fig. 3i) to a voltage controlled oscillator (10, Fig. 1) providing the timing signal. In the phase discriminator 16, a monostable generator 18 produces the constant width pulse from input data pulse, the flip-flop generator 22 being set and reset by the data and timing pulses. In operation, whenever the frequency of the controlled oscillator is to be increased, the pulse output (20, Fig. 3b) from generator 18 is applied in conjunction with a delayed pulse (44, Fig. 3e) from generator 22 to a NAND gate 28 to produce a positive pulse (34, Fig. 3g) having a duration corresponding to the time the direct and delayed pulses (20, 32) remain negative concurrently. The positive pulse output is switched through a current source to develop a current of duration representative of the phase error between data and clock. This current is applied to an integrating and compensating network 38 to provide an error voltage to control the oscillator. For a required decrease in frequency, NAND gate 26 becomes operative to switch current source 36 by a waveform (40, Fig. 3h) dependent on the concurrent positive duration of the input pulses (Fig. 3d, 3e). Alternatively, a D.C. integrator may be used in lieu of the gated current source type of integrator.
GB47503/69A 1968-10-28 1969-09-26 Signal phasecompensation circuits Expired GB1256164A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77120568A 1968-10-28 1968-10-28

Publications (1)

Publication Number Publication Date
GB1256164A true GB1256164A (en) 1971-12-08

Family

ID=25091046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47503/69A Expired GB1256164A (en) 1968-10-28 1969-09-26 Signal phasecompensation circuits

Country Status (9)

Country Link
US (1) US3701039A (en)
BE (1) BE738808A (en)
CH (1) CH503423A (en)
DE (1) DE1953484C3 (en)
ES (1) ES371844A1 (en)
FR (1) FR2021675A1 (en)
GB (1) GB1256164A (en)
NL (1) NL164439C (en)
SE (1) SE361226B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116603A1 (en) * 1980-04-28 1982-02-18 RCA Corp., 10020 New York, N.Y. "DIGITAL PHASE COMPARATOR WITH INCREASED SENSITIVITY FOR SMALL PHASE DIFFERENCES"

Families Citing this family (31)

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Publication number Priority date Publication date Assignee Title
DE2238964C3 (en) * 1972-08-08 1981-07-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Frequency control arrangement
US3805180A (en) * 1972-12-27 1974-04-16 A Widmer Binary-coded signal timing recovery circuit
US3806827A (en) * 1973-07-16 1974-04-23 Honeywell Inc Frequency locked oscillator system in which input and oscillator frequencies are compared on half-cycle basis
GB1456453A (en) * 1974-01-31 1976-11-24 Ibm Phase locked oscillators
US3980968A (en) * 1975-01-02 1976-09-14 Zenith Radio Corporation Non-proportionate AFC system
US3986125A (en) * 1975-10-31 1976-10-12 Sperry Univac Corporation Phase detector having a 360 linear range for periodic and aperiodic input pulse streams
US4034309A (en) * 1975-12-23 1977-07-05 International Business Machines Corporation Apparatus and method for phase synchronization
US4053933A (en) * 1976-11-02 1977-10-11 Zenith Radio Corporation Adaptive phase locked loop filter for television tuning
DE2747438C3 (en) * 1977-10-21 1981-10-01 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for phase-locked tracking of an output signal as a function of an input signal
US4121172A (en) * 1977-11-14 1978-10-17 Magnetic Peripherals Inc. Dual loop phase locked oscillator system
US4167711A (en) * 1978-05-26 1979-09-11 Motorola, Inc. Phase detector output stage for phase locked loop
SE413826B (en) * 1978-09-21 1980-06-23 Ellemtel Utvecklings Ab SET IN A TELECOMMUNICATION SYSTEM REGULATING THE PHASE OF A CONTROLLED SIGNAL IN RELATION TO A REFERENCE SIGNAL AND DEVICE FOR IMPLEMENTATION OF THE SET
US4222009A (en) * 1978-11-02 1980-09-09 Sperry Corporation Phase lock loop preconditioning circuit
US4214279A (en) * 1979-01-25 1980-07-22 International Business Machines Corporation Clocking system for servo signal having two or more harmonically related frequencies
US4238740A (en) * 1979-02-02 1980-12-09 Bell Telephone Laboratories, Incorporated Phase-locked loop for PCM transmission systems
US4246545A (en) * 1979-02-02 1981-01-20 Burroughs Corporation Data signal responsive phase locked loop using averaging and initializing techniques
DE2943510C2 (en) * 1979-10-27 1983-03-31 Rohde & Schwarz GmbH & Co KG, 8000 München Phase-controlled high frequency oscillator
JPS56136065A (en) * 1980-03-27 1981-10-23 Victor Co Of Japan Ltd Data regenerator
DE3124516A1 (en) * 1981-06-23 1983-05-26 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang ARRANGEMENT FOR REDUCING PHASE FLUCTUATIONS IN THE OUTSTOCK OF ELASTIC STORAGE
EP0081598B1 (en) * 1981-12-10 1985-04-24 Deutsche ITT Industries GmbH Digital phase/frequency control circuit
US4580100A (en) * 1982-12-17 1986-04-01 Tokyo Shibaura Denki Kabushiki Kaisha 72 Phase locked loop clock recovery circuit for data reproducing apparatus
EP0308540B1 (en) * 1983-11-17 1993-01-27 Kabushiki Kaisha Toshiba Oscillator circuit
US4682121A (en) * 1985-02-04 1987-07-21 International Business Machines Corporation Phase discriminator and data standardizer
US4698600A (en) * 1985-02-04 1987-10-06 International Business Machines Corporation Clock phase discriminator
FR2587569B1 (en) * 1985-09-17 1991-09-20 Thomson Csf FAST VARIATION FREQUENCY GENERATOR
DE3634751A1 (en) * 1986-10-11 1988-04-14 Thomson Brandt Gmbh PHASE DISCRIMINATOR, ESPECIALLY FOR A PLL CIRCUIT
ATE86810T1 (en) * 1987-12-17 1993-03-15 Siemens Ag FREQUENCY DISCRIMINATOR FOR A DIGITAL PHASE LOCKED LOOP.
US4958243A (en) * 1988-09-15 1990-09-18 International Business Machines Corporation Phase discrimination and data separation method and apparatus
US5081427A (en) * 1990-11-29 1992-01-14 Motorola, Inc. Fast lock time phase locked loop
WO1996010296A1 (en) * 1994-09-28 1996-04-04 Philips Electronics N.V. Phase-locked loop, phase comparator for use in the phase-locked loop, and reproducing device including the phase-locked loop
US6067335A (en) * 1996-08-02 2000-05-23 Silicon Systems, Inc. Read channel IC for dual PLL solution

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991426A (en) * 1960-06-22 1961-07-04 Marvin D Aasen Proportional automatic frequency control circuit
US3271675A (en) * 1962-12-13 1966-09-06 Philco Corp Phase detector and automatic apparatus utilizing said phase detector for performing a rotational mechanical adjustment to effect a phase coincidence
US3328719A (en) * 1965-08-24 1967-06-27 Sylvania Electric Prod Phase-lock loop with adaptive bandwidth
US3290611A (en) * 1965-09-14 1966-12-06 Bell Telephone Labor Inc Digital frequency control circuit
GB1103520A (en) * 1965-12-21 1968-02-14 Gen Electric Co Ltd Improvements in or relating to electric circuits comprising oscillators
US3337813A (en) * 1965-12-27 1967-08-22 Bell Telephone Labor Inc Phase-controlled oscillator having a bistable circuit in the control loop
US3383619A (en) * 1966-12-09 1968-05-14 Navy Usa High speed digital control system for voltage controlled oscillator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116603A1 (en) * 1980-04-28 1982-02-18 RCA Corp., 10020 New York, N.Y. "DIGITAL PHASE COMPARATOR WITH INCREASED SENSITIVITY FOR SMALL PHASE DIFFERENCES"
US4322643A (en) 1980-04-28 1982-03-30 Rca Corporation Digital phase comparator with improved sensitivity for small phase differences

Also Published As

Publication number Publication date
NL164439B (en) 1980-07-15
US3701039A (en) 1972-10-24
NL164439C (en) 1980-12-15
FR2021675A1 (en) 1970-07-24
DE1953484A1 (en) 1970-05-27
ES371844A1 (en) 1971-11-16
DE1953484C3 (en) 1984-10-04
DE1953484B2 (en) 1973-05-03
BE738808A (en) 1970-02-16
NL6916048A (en) 1970-05-01
SE361226B (en) 1973-10-22
CH503423A (en) 1971-02-15

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